CN102822557A - Method for producing spring - Google Patents

Method for producing spring Download PDF

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Publication number
CN102822557A
CN102822557A CN2011800152738A CN201180015273A CN102822557A CN 102822557 A CN102822557 A CN 102822557A CN 2011800152738 A CN2011800152738 A CN 2011800152738A CN 201180015273 A CN201180015273 A CN 201180015273A CN 102822557 A CN102822557 A CN 102822557A
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CN
China
Prior art keywords
spring
temperature
rear stabilizer
cooling
coating
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Granted
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CN2011800152738A
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Chinese (zh)
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CN102822557B (en
Inventor
平田雄一
请井良好
铃木秀和
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Chuo Hatsujo KK
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Chuo Hatsujo KK
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Publication of CN102822557A publication Critical patent/CN102822557A/en
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    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/26—Methods of annealing
    • C21D1/32—Soft annealing, e.g. spheroidising
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/02—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for springs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
    • B05D3/0218—Pretreatment, e.g. heating the substrate
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/14—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D7/00—Modifying the physical properties of iron or steel by deformation
    • C21D7/02—Modifying the physical properties of iron or steel by deformation by cold working
    • C21D7/04—Modifying the physical properties of iron or steel by deformation by cold working of the surface
    • C21D7/06—Modifying the physical properties of iron or steel by deformation by cold working of the surface by shot-peening or the like
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F1/00—Springs
    • F16F1/02—Springs made of steel or other material having low internal friction; Wound, torsion, leaf, cup, ring or the like springs, the material of the spring not being relevant
    • F16F1/024—Covers or coatings therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
    • B05D3/0254—After-treatment
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F2226/00—Manufacturing; Treatments
    • F16F2226/02—Surface treatments

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Organic Chemistry (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Vehicle Body Suspensions (AREA)
  • Springs (AREA)
  • Heat Treatment Of Articles (AREA)

Abstract

In the provided method for producing a spring with a painted surface, the paint baking and low-temperature annealing are combined, and the time for said treatment is shortened. The production method has a heating step (S12) for heating the spring to a predetermined set temperature, and painting steps (S14, S16) for, while cooling the heated spring by a predetermined cooling pattern, spraying paint onto the surface of the spring and baking the spring. In addition, the set temperature in the heating step and the cooling pattern in the painting steps are set in a manner such that the spring is annealed at a prescribed low-temperature during the heating step and painting steps.

Description

The production method of spring
Technical field
The present invention relates to a kind of production method of spring.More particularly, the present invention relates to a kind of technology of the spring surface being carried out the coating process needed time of application processing that is used to shorten.
Background technique
When load acts on spring repeatedly this spring produce tired, so need this spring be handled (for example shot blast) for the durability that improves spring.In addition, shorten or the mechanical property variation working life because of corrosion, application is carried out on the surface of spring handled in order to prevent spring.For this reason; In the production method of existing spring; At first be used to improve the processing (for example shot blast) of the durability of spring; Afterwards paint is coated on the spring surface, at last the coating that is sprayed is baked on the spring surface (kind Co., Ltd. of " spring " the 4th edition the 522nd ~ 530 page, ball that Japanese spring association writes).
In order to improve its durability spring is carried out shot blast etc. when handling, spring is easy to generate bigger permanent strain after use, so preferably spring is heat-treated, produce permanent strain to prevent it.Therefore can consider together to carry out following two kinds of heat treatments to reduce operation, that is: be used for the coating that is sprayed is baked to the lip-deep heat treatment of spring (being baking processing) and prevents that spring from producing the heat treatment of permanent strain (being that stress relieving after the shot blast is handled (below be called the stress relieving processing)).
But owing to be sprayed on the lip-deep coating of spring its intrinsic baking application temperature range is arranged, so must in this temperature range, carry out baking processing.Therefore, handle if together carry out baking processing and stress relieving, the temperature limitation when needing to handle is in the baking application temperature range of coating.And baking application temperature range is usually less than and is applicable to the stress relieving treatment temperature.Like this, handle, just have the long problem of required time of heat-treating if together carry out baking processing and stress relieving.
Summary of the invention
In view of above-mentioned technical problem, the purpose of this invention is to provide following a kind of technology: together carrying out shortening its processing time when baking processing and stress relieving are handled.
The production method of the spring of record has in this manual: heating process is heated to predefined setting temperature with spring; Coating process when cooling off heated spring with the predefined type of cooling, is coated in paint the spring surface and carries out baking processing.In addition, the setting temperature and the type of cooling are set according in heating process and coating process, handling the stress relieving that spring forms prescribed form.
In this production method, spring is heated to setting temperature, in the heated spring of cooling, paint is coated in the spring surface and carries out baking processing.Therefore, the setting temperature of heating spring does not receive the restriction of the baking application temperature range of coating, can make heating-up temperature be higher than this temperature range, can carry out suitable stress relieving to spring like this and handle.On the other hand,, in the temperature of spring is reduced to the application temperature range, afterwards paint is coated on the spring surface, so also can carries out suitable application and handle the spring surface even if make the temperature of heating spring surpass the application temperature range.Therefore, the present invention can together carry out the such heat treatment of baking processing and stress relieving processing at short notice.
In above-mentioned production method, preferably setting temperature is set in 190 ~ 300 ℃ the scope.If 190 ℃ of setting temperature less thaies, time of must the lengthening stress relieving handling, otherwise that stress relieving is handled is just insufficient, the degradation of anti-permanent strain of spring like this.On the other hand, if setting temperature surpasses 300 ℃, then the stress relieving processing also can variation above the durability of required degree spring.
In addition, in above-mentioned production method, preferably make setting temperature surpass the CLV ceiling limit value of the baking application temperature range of coating.Through making setting temperature surpass the CLV ceiling limit value of the baking application temperature range of coating, can shorten the end time required to the baking of coating.
When making setting temperature surpass the CLV ceiling limit value of baking application temperature range of coating, the rate of cooling that preferably will be used to cool off spring is set in 0.01 ~ 13.00 ℃/second the scope.More preferably rate of cooling is set in 0.50 ~ 4.50 ℃/second the scope.
Description of drawings
Fig. 1 is the flow chart of a part of the manufacturing process of expression embodiment medi-spring.
Fig. 2 is that the temperature-resistant stress relieving upper and lower bound in the processing time when handling is carried out in expression.
Fig. 3 is the schematic representation of an example of the temperature curve between expression step S12 ~ S16.
Fig. 4 is the schematic representation of other examples of expression temperature curve.
Fig. 5 is the schematic representation of other examples of expression temperature curve.
Fig. 6 is the schematic representation of other examples of expression temperature curve.
Embodiment
The production method of present embodiment medi-spring is described below.In the present embodiment, illustrate the situation of a kind of rear stabilizer of making spring.Rear stabilizer has roughly the linearly line part and the arm that is located at the two ends of this line part of shape.When being installed in rear stabilizer on the automobile, should the arm at its two ends be fixed on the left and right wheels, also will its line part be fixed on the vehicle body.When being installed in rear stabilizer on the vehicle body like this, can Control of Automobile when turning the horizontal inclination of vehicle body to improve the riding stability of automobile.
Have following operation in the production method of rear stabilizer: molding procedure, at first steel are carried out clod wash and roll over processing or heat bending process or processing of hot bending folding and formation rear stabilizer shape; Heat treatment step is heat-treated the steel that form the rear stabilizer shape; Blasting process carries out shot blast to after heat treatment steel surface; Coating process carries out application to the steel surface after shot blast and handles.Because molding procedure is the same with existing method with heat treatment step, so omit its detailed description at this.Specify blasting process and coating process below.
As shown in Figure 1, at first in heat treatment step the rear stabilizer surface of Overheating Treatment carry out shot blast (step S10).Can give the durability that the rear stabilizer compressive residual stress is beneficial to improve rear stabilizer like this.In addition, remove the surface film oxide that is formed on the rear stabilizer surface in the heat treatment step that after molding procedure, carries out.Can improve painting effect like this.Also have, the shot blast of step S10 can adopt the method the same with existing method to carry out.In step S10, also can carry out honing process or sand blast to replace shot blast.
Then the rear stabilizer that in step S10, has passed through shot blast is heated (step S12).In this heat treated, the heating rear stabilizer is so that its surface temperature rises to predefined setting temperature.Preferably setting temperature is set in 190 ~ 300 ℃ the scope.If 190 ℃ of setting temperature less thaies; State the baking processing time among the step S16 after must extending; Otherwise it is just insufficient that stress relieving is handled, and carries out insufficiently if stress relieving is handled, and gives the performance deleterious impact that produces because of the shot blast among the step S10; Make processing deformation carry out insufficiently, like this degradation of anti-the permanent strain.On the other hand; If setting temperature is above 300 ℃; After the baking processing of end step S16; Stress relieving is handled and is surpassed required degree, surpasses required degree if stress relieving is handled, and the compressive residual stress of giving because of the shot blast among the step S10 is excessively discharged the durability variation that makes rear stabilizer.
Here, owing to the heat treated of step S12 was carried out before the application rear stabilizer, so can setting temperature be set at the temperature of the upper limit of the baking application temperature range that is higher than coating.In step S12; When heating rear stabilizer through temperature with the upper limit of the baking application temperature range that is higher than coating; In the heating process of step S12, can further improve the stress relieving treatment effect, can shorten like this and finish the required time of stress relieving processing.Also have,, in the present embodiment, in the temperature of spring is reduced to the application temperature range, afterwards paint is coated on the rear stabilizer surface, so can not have problems even if make setting temperature surpass the upper limit of the baking application temperature range of coating.
In addition, in the heating process of step S12, also can be after the surface temperature that makes rear stabilizer rise to setting temperature, heating also keeps the stipulated time under this setting temperature.Help making the surface temperature of rear stabilizer even like this.At this moment, the time that makes maintenance under this setting temperature is about 0 ~ 60 second.Through making the retention time be less than 60 seconds, can prevent that heating process is consuming time oversize.
Also have, in the heating process of above-mentioned steps S12, can adopt various heating means.But for the required time of the heating process that shortens step S12, the preferred heating means that adopt the ability rapid heating.As above-mentioned rapid heating method, for example can adopt high speed hot blast adding method (wind speed is more than 10m/s), induction heating method, infrared heating method, energising heating means etc.
After the heating of end step S12, then paint is coated in rear stabilizer surface (step S14) to rear stabilizer.When sprayed coating, for example can adopt to make coating be spraying method vaporific and that spray with high-pressure air.The spraying condition is 50 ~ 200mm for wind speed 0.5 ~ 1.0m/ divides the distance of spraying for example.Perhaps can also adopt electrostatic painting method to come sprayed coating.The electrostatic spraying condition is 50 ~ 100m for voltage 40 ~ 100kV, wind speed 0.5 ~ 1.0m/ divide air quantity for example 3/ minute.Can form filming of uniform film thickness when carrying out application under these conditions.
Also have, the sprayed coating operation of step S14 is to carry out after the surface temperature at rear stabilizer rises in the baking application temperature range of coating.Therefore,, rear stabilizer is cooled off so that its surface temperature is reduced in the baking application temperature range, afterwards paint is coated on the rear stabilizer surface when the surface temperature of the rear stabilizer of step S12 surpasses going up in limited time of baking application temperature range.
, after the operation of rear stabilizer surface sprayed coating, then will be sprayed on the lip-deep coating of rear stabilizer and be baked to (step S16) on the rear stabilizer surface in end.When baked paint, can utilize the heat of giving rear stabilizer in the heating process of step S12.In addition, in step S16, come according to the rules the type of cooling to reduce the surface temperature of rear stabilizer through control.Can the surface temperature of rear stabilizer be remained in the baking application temperature range of coating like this, and then in the baking processing that can carry out carrying out when stress relieving is handled coating to rear stabilizer.
That is, in the present embodiment, the setting temperature of above-mentioned steps S12 and step S12,14 the type of cooling are according to carrying out that stress relieving is handled so that it produces suitable effect sets to rear stabilizer.That is, the stress relieving of rear stabilizer is handled and can under following two kinds of situation, be carried out, that is, can carry out between the heat treated of step S12 and between the step S14,16 coating process.Therefore, when the setting temperature of step S12 is higher, can in step S12, give enough stress relieving effects.Therefore need not in step S14,16, to improve again the stress relieving effect.To this, through strengthening step S14,16 rate of cooling and/or shortening processing time of step S16, so that the stress relieving effect is no more than required degree.On the contrary, if the setting temperature of step S12 is lower, in step S12, only can give inadequate stress relieving effect.Therefore, must in step S14,16, improve the stress relieving effect again.To this, through reducing step S14,16 rate of cooling and/or prolonging processing time of step S16, to obtain enough stress relieving effects.
As stated, in the present embodiment,, can shorten the processing time of step S16 through improving the setting temperature of step S12.Utilize Fig. 2 to specify above-mentioned situation.In Fig. 2, the upper limit time the when curve representation of upside carries out the constant stress relieving of treatment temperature, the lower limit time the when curve representation of downside carries out the constant stress relieving of treatment temperature.In addition, temperature T HThe upper limit of expression baking application temperature, and temperature T LThe lower limit of expression baking application temperature.For example making stress relief annealed treatment temperature is that T, stress relief annealed upper limit time are t 2, and the stress relief annealed lower limit time is t 1That is, when stress relief annealed treatment temperature is T, must make the processing time at t 1~ t 2Scope in.If the processing time surpasses t 2, the stress relieving effect surpasses required degree, though anti-permanent strain performance improves, durability then can variation.On the other hand, if not enough t of processing time 1, the stress relieving effect is insufficient, though durability improves the degradation of anti-the permanent strain.Can know that by Fig. 2 treatment temperature is got over Gao Yueneng and accomplished the stress relieving processing at short notice.Especially temperature surpasses the upper limit T of application temperature range HWhen (for example 240 ℃), can give required stress relieving effect in the short time at the utmost point.Therefore,, the stress relieving effect of being given among the step S12 be can improve, and then step S14, processing time of 16 shortened through improving the setting temperature of step S12.
Also have, in step S16, owing to must coating be baked on the rear stabilizer surface, so baked paint makes the baking application temperature range of surface temperature at coating of rear stabilizer in the required time in.Therefore, can be according to the CLV ceiling limit value that finishes the required definite rate of cooling of time of baking application.When for example the surface temperature of rear stabilizer reduced as linear function, baking application temperature range was 240 ~ 160 ℃, and stoving time is required to be 20 timesharing, and the maximum value of rate of cooling is 80 ℃/20 minutes (240 ℃/hour).Therefore, can rate of cooling be set in less than in 240 ℃/hour the scope.
For example rear stabilizer is configured in the hot blast stove, controls the rate of cooling of the rear stabilizer among the above-mentioned steps S16 through the temperature of adjusting the hot blast of in hot blast stove, supplying.The rate of cooling scope of at this moment preferred rear stabilizer is between 0.01 ~ 13.00 ℃/second.If rate of cooling is less than 0.01 ℃/second, the stress relief annealed processing time is elongated.On the other hand, if rate of cooling greater than 13.00 ℃/second, then is difficult to guarantee enough stoving times.In addition, consider that preferred rate of cooling is between 0.50 ~ 4.50 ℃/second from the angle that improves coating quality.When in this rate of cooling scope, carrying out application and handling, the surface temperature difference in the time of can be with application roughly is controlled in the scope that does not go wrong.
Also have, for example can make the temperature curve (mode of heating and the type of cooling) of step S11 ~ 16 be the temperature curve shown in Fig. 3 ~ 6.In example shown in Figure 3, at first, the surface temperature of rear stabilizer is heated to T 1(t 1~ t 2).Adopt bigger rate of cooling (temperature slip) to cool off rear stabilizer so that its surface temperature reaches T 2(CLV ceiling limit value of the baking application temperature range of coating (is T in the example of Fig. 2 H)), afterwards paint is coated in (t on the rear stabilizer surface 3~ t 4).After being coated in paint on the rear stabilizer surface, controlling rate of cooling so that carry out the baking processing (t of stipulated time in the surface temperature maintenance baking application temperature range of rear stabilizer 4~ t 5).From paint being coated on the rear stabilizer surface to the time t that finishes the baking of coating 3~ t 5Between the rate of cooling (temperature slip) of rear stabilizer, less than moment t 2~ t 3Between the rate of cooling of rear stabilizer.In temperature curve shown in Figure 3, owing to heating makes its surface temperature reach the temperature T that surpasses the CLV ceiling limit value of toasting the application temperature range to rear stabilizer 1So, can improve t 1~ t 3Between the stress relieving of carrying out handle the stress relieving effect of being given.Therefore, can shorten and application is carried out on the rear stabilizer surface handled required processing time t 1~ t 5
In addition, in example shown in Figure 4, at first, the surface temperature of rear stabilizer is heated to T 4(t 7~ t 8).Adopt certain rate of cooling (temperature slip) to cool off rear stabilizer afterwards to reduce its surface temperature (t 8~ t 11).In this cooling procedure, when the surface temperature of rear stabilizer reaches in the baking application temperature range of coating, paint is coated in (t on the rear stabilizer surface 9~ t 10).Carry out baking processing (t to being sprayed on the lip-deep coating of rear stabilizer afterwards 10~ t 11).The same with example shown in Figure 3, in temperature curve shown in Figure 4, also can shorten the required processing time t of application processing is carried out on the rear stabilizer surface 8~ t 11
Also have, can above-mentioned temperature curve shown in Figure 3 be changed into the temperature curve of that kind shown in Figure 5.With temperature curve difference shown in Figure 3 be, in temperature curve shown in Figure 5, from paint being coated on the rear stabilizer surface to the time t that finishes the baking of coating 3~ t 4Between the rate of cooling (temperature slip) of rear stabilizer be 0 (surface temperature that is rear stabilizer remains unchanged).Even adopt this temperature curve, owing to heating makes its surface temperature reach the temperature T that surpasses the CLV ceiling limit value of toasting the application temperature range to rear stabilizer 1, therefore, also can shorten the required processing time t of application processing is carried out on the rear stabilizer surface 1~ t 4
Have again, can above-mentioned temperature curve shown in Figure 4 be changed into the temperature curve of that kind shown in Figure 6.Be in temperature curve shown in Figure 6, the surface temperature of rear stabilizer to be heated to T with temperature curve difference shown in Figure 4 4(t 7~ t 8), be T with rear stabilizer in surface temperature afterwards 4Condition under keep the stipulated time (t 8~ t 8 ').When adopting this temperature curve, the surface temperature that can make rear stabilizer is evenly to improve the coating quality of rear stabilizer.Also have, can be with making the uniform time (t of surface temperature shown in Figure 6 8~ t 8) divide and to be arranged in each temperature curve in Fig. 3 ~ 5.
As above-mentioned detailed description; In the production method of the rear stabilizer of present embodiment; Rear stabilizer is heated above the temperature of the upper limit of the baking application temperature range of coating before handling carrying out application; When this rear stabilizer is cooled off paint is coated on the rear stabilizer surface, this coating that is sprayed is baked on the rear stabilizer surface.In the temperature of the upper limit of the baking application temperature range that rear stabilizer is heated above coating, also handle rear stabilizer being carried out stress relieving, so can reduce the stress relieving effect of the stress relieving processing that must when baked paint, carry out.Can shorten so the required processing time of application processing is carried out on the rear stabilizer surface.
Specified specific embodiment of the present invention above, but these embodiments are several examples, are not used for limiting the protection domain of present patent application.The technological scheme of being put down in writing in claims of present patent application comprises that specific embodiment to above-mentioned example carries out various modification, the technological scheme after changing.
For example, in the above-described embodiments, the situation of making rear stabilizer has been described, but also has been suitable for during spring beyond making rear stabilizer of technology of the present invention.Especially well be applicable to the spring that carries out shot blast and application processing.As this spring, helical spring, torsion bar etc. are for example arranged.
In addition, even for making coating quality, also the usable temp register is measured the surface temperature of spring, begins to carry out application from the position that the surface temperature of spring becomes suitable temperature and handles.When making beginning temperature-resistant during sprayed coating, the phenomenon that can prevent colour contamination is to improve coating quality.
Illustrated technical characteristics in this specification or the accompanying drawing, the combination when being not limited to apply for described in claims, it is separately or through the various combinations practicability that possesses skills.In addition, though this specification or technological scheme shown in the drawings can realize a plurality of purposes simultaneously, as long as realize its practicability that also possesses skills of one of them purpose.

Claims (6)

1. the production method of a spring has:
Heating process is heated to predefined setting temperature with spring;
Coating process when cooling off heated spring with the predefined type of cooling, is coated in paint the spring surface and carries out baking processing,
The above-mentioned setting temperature and the above-mentioned type of cooling are set according in heating process and coating process, handling the stress relieving that spring forms prescribed form.
2. the production method of spring as claimed in claim 1 is characterized in that,
Above-mentioned setting temperature is set in 190 ~ 300 ℃ the scope.
3. the production method of spring as claimed in claim 2 is characterized in that,
Above-mentioned setting temperature is higher than the CLV ceiling limit value of the baking application temperature range of coating.
4. the production method of spring as claimed in claim 3 is characterized in that,
In the above-mentioned coating process, the rate of cooling that is used to cool off spring is set in 0.01 ~ 13.00 ℃/second the scope.
5. the production method of spring as claimed in claim 4 is characterized in that,
Above-mentioned rate of cooling is set in 0.50 ~ 4.50 ℃/second the scope.
6. like the production method of any described spring of claim 1 ~ 5, it is characterized in that,
Before above-mentioned heating process, also have the blasting process that the spring surface is carried out shot blast,
It is to prevent that spring from producing the heat treatment of permanent strain that the stress relieving of afore mentioned rules is handled.
CN201180015273.8A 2010-03-23 2011-03-15 Method for producing spring Expired - Fee Related CN102822557B (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2010065507A JP5550405B2 (en) 2010-03-23 2010-03-23 Spring manufacturing method
JP2010-065507 2010-03-23
PCT/JP2011/056051 WO2011118451A1 (en) 2010-03-23 2011-03-15 Method for producing spring

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CN102822557A true CN102822557A (en) 2012-12-12
CN102822557B CN102822557B (en) 2015-03-04

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US (1) US20130118649A1 (en)
EP (1) EP2551547B1 (en)
JP (1) JP5550405B2 (en)
KR (1) KR101691846B1 (en)
CN (1) CN102822557B (en)
BR (1) BR112012023918A2 (en)
CA (1) CA2793707A1 (en)
MX (1) MX2012011027A (en)
WO (1) WO2011118451A1 (en)

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CN105546004A (en) * 2016-01-14 2016-05-04 广州奥图弹簧有限公司 Flocking spring manufacturing method
CN107109514A (en) * 2014-12-08 2017-08-29 日本发条株式会社 A kind of manufacture method of stabiliser bar

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